Objective-C

Append Bytes to a Remote FTP File (BinData)

Demonstrates the Chilkat Ftp2.AppendFileBd method, which appends the bytes in a BinData to a remote file. The first argument is the remote filename and the second is the BinData. No conversion is performed.

Background: The binary append: add in-memory bytes to the end of a remote file without an intermediate local file and without any encoding or line-ending translation. It is the right choice for growing a binary file — concatenating captured data, for instance — where exact bytes matter.

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Objective-C

#import <CkoFtp2.h>
#import <CkoBinData.h>

BOOL success = NO;

//  Demonstrates the Ftp2.AppendFileBd method, which appends the bytes in a BinData to a remote
//  file.  The 1st argument is the remote filename and the 2nd is the BinData.

CkoFtp2 *ftp = [[CkoFtp2 alloc] init];

ftp.Hostname = @"ftp.example.com";
ftp.Username = @"myFtpLogin";

//  Normally you would not hard-code the password in source.  You should instead obtain it
//  from an interactive prompt, environment variable, or a secrets vault.
ftp.Password = @"myPassword";

success = [ftp Connect];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

CkoBinData *bd = [[CkoBinData alloc] init];
success = [bd LoadFile: @"qa_data/more_data.bin"];
if (success == NO) {
    NSLog(@"%@",bd.LastErrorText);
    return;
}

success = [ftp AppendFileBd: @"data/collected.bin" bd: bd];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}

NSLog(@"%@%d%@",@"Appended ",[bd.NumBytes intValue],@" bytes.");

success = [ftp Disconnect];
if (success == NO) {
    NSLog(@"%@",ftp.LastErrorText);
    return;
}